自学教程：C++ wxGetMousePosition函数代码示例

void wxJigsawEditorCanvas::OnIdle( wxIdleEvent& event ){		do	{		if(!HasCapture()) break;		// get mouse in client coordinates		wxPoint currentPos = ScreenToClient(wxGetMousePosition());		//Update the offset to the next mouse down event		if(m_View->GetSelectedObject())		{			wxPoint diagramPoint = PointToViewPoint(currentPos);			wxPoint groupPosition = m_View->GetRealGroupPosition(m_View->GetSelectedObject());			m_SelectedObjectOffset = wxSize(				diagramPoint.x - groupPosition.x,				diagramPoint.y - groupPosition.y);		}		// get scroll position		wxPoint scrollPos = GetScrollPosition();				// auto scroll		// check current drag position and update scroll regularly		if(AutoScroll(currentPos, scrollPos))		{			event.RequestMore();		}		FixViewOffset();	}	while(false);}

void tabButton::updateMouse(wxMouseEvent& event){	if (m_bSelected)		return;	wxRect panelRec = GetScreenRect();	panelRec.x += 2;	panelRec.y += 2;	panelRec.width -= 4;	panelRec.height -= 4;	wxPoint mousePoint = wxGetMousePosition();	bool t1 = panelRec.x <= mousePoint.x;	bool t2 = panelRec.y <= mousePoint.y;	bool t3 = (panelRec.x + panelRec.width ) >= mousePoint.x;	bool t4 = (panelRec.y + panelRec.height) >= mousePoint.y;	if (t1 && t2 && t3 && t4)	{		this->SetBackgroundColour( MOUSEOVER );	}	else	{		this->SetBackgroundColour( NORMAL );	}	this->Refresh();}

/**< context menu */void ImagePanel::OnContextMenu(wxContextMenuEvent& event){	if (m_stMP.iState != 0)		return;	wxMenu* pMenu = new wxMenu();	wxASSERT_MSG(pMenu != nullptr, _T("Create Popup Menu failed."));	wxMenuItem* pMenuItem = nullptr;	// group 1	if (m_img.IsOk())	{		pMenuItem = new wxMenuItem(pMenu, ID_CMENU_SAVE, _("&Save Image"), _("Save the Image"));		pMenu->Append(pMenuItem);	}	// popup	if (pMenuItem != nullptr)	{		wxPoint pt = event.GetPosition();		if (pt == wxDefaultPosition)		{			// position invalide, get the mouse position			pt = wxGetMousePosition();			wxRect rc = GetScreenRect();			if (!rc.Contains(pt))			{				// mouse is't in the panel, get the panel center				pt.x = rc.x + rc.width/2;				pt.y = rc.y + rc.height/2;			}		}		pt = ScreenToClient(pt);		PopupMenu(pMenu, pt);	}	delete pMenu;}

static void wxFillOtherKeyEventFields(wxKeyEvent& event,                                      wxWindowGTK *win,                                      GdkEventKey *gdk_event){    int x = 0;    int y = 0;    GdkModifierType state;    if (gdk_event->window)        gdk_window_get_pointer(gdk_event->window, &x, &y, &state);    event.SetTimestamp( gdk_event->time );    event.SetId(win->GetId());    event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;    event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;    event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;    event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK) != 0;#if wxMAJOR_VERSION == 2    event.m_scanCode = gdk_event->keyval;#endif    event.m_rawCode = (wxUint32) gdk_event->keyval;    event.m_rawFlags = 0;#if wxUSE_UNICODE    event.m_uniChar = gdk_keyval_to_unicode(gdk_event->keyval);#endif    wxGetMousePosition( &x, &y );    win->ScreenToClient( &x, &y );    event.m_x = x;    event.m_y = y;    event.SetEventObject( win );}

wxMouseState wxGetMouseState(){    wxMouseState ms;    wxPoint pt = wxGetMousePosition();    ms.SetX(pt.x);    ms.SetY(pt.y);#if TARGET_API_MAC_OSX    UInt32 buttons = GetCurrentButtonState();    ms.SetLeftDown( (buttons & 0x01) != 0 );    ms.SetMiddleDown( (buttons & 0x04) != 0 );    ms.SetRightDown( (buttons & 0x02) != 0 );#else    ms.SetLeftDown( Button() );    ms.SetMiddleDown( 0 );    ms.SetRightDown( 0 );#endif    UInt32 modifiers = GetCurrentKeyModifiers();    ms.SetControlDown(modifiers & controlKey);    ms.SetShiftDown(modifiers & shiftKey);    ms.SetAltDown(modifiers & optionKey);    ms.SetMetaDown(modifiers & cmdKey);    return ms;}

void wxPopupTransientWindow::OnIdle(wxIdleEvent& event){    event.Skip();    if (IsShown() && m_child)    {        // Store the last mouse position to minimize the number of calls to        // wxFindWindowAtPoint() which are quite expensive.        static wxPoint s_posLast;        const wxPoint pos = wxGetMousePosition();        if ( pos != s_posLast )        {            s_posLast = pos;            wxWindow* const winUnderMouse = wxFindWindowAtPoint(pos);            // We release the mouse capture while the mouse is inside the popup            // itself to allow using it normally with the controls inside it.            if ( wxGetTopLevelParent(winUnderMouse) == this )            {                if ( m_child->HasCapture() )                {                    m_child->ReleaseMouse();                }            }            else // And we reacquire it as soon as the mouse goes outside.            {                if ( !m_child->HasCapture() )                {                    m_child->CaptureMouse();                }            }        }    }}

    virtual void Paint( wxDC &dc )    {        wxCustomButton *dropBut = ((wxMenuButton*)GetParent())->GetDropDownButton();        // pretend that both buttons have focus (for flat style)        if (dropBut)        {            wxPoint p = GetParent()->ScreenToClient(wxGetMousePosition());            if (GetRect().Contains(p) || dropBut->GetRect().Contains(p))            {                m_focused = true;                if (!dropBut->GetFocused())                    dropBut->SetFocused(true);            }            else            {                m_focused = false;                if (dropBut->GetFocused())                    dropBut->SetFocused(false);            }        }        wxCustomButton::Paint(dc);    }

    virtual void Paint( wxDC &dc )    {        wxCustomButton *labelBut = ((wxMenuButton*)GetParent())->GetLabelButton();        // pretend that both buttons have focus (for flat style)        if (labelBut)        {            wxPoint p = GetParent()->ScreenToClient(wxGetMousePosition());            if (GetRect().Inside(p) || labelBut->GetRect().Inside(p))            {                m_focused = true;                if (!labelBut->GetFocused())                    labelBut->SetFocused(true);            }            else            {                m_focused = false;                if (labelBut->GetFocused())                    labelBut->SetFocused(false);            }        }        wxCustomButton::Paint(dc);    }

void StripMenuButton::updateMouse(){	wxRect panelRec = GetScreenRect(); 	panelRec.x += 2;	panelRec.y += 2;	panelRec.width -= 4;	panelRec.height -= 4;	wxPoint mousePoint = wxGetMousePosition();	bool t1 = panelRec.x <= mousePoint.x;	bool t2 = panelRec.y <= mousePoint.y;	bool t3 = (panelRec.x + panelRec.width ) >= mousePoint.x;	bool t4 = (panelRec.y + panelRec.height) >= mousePoint.y;	if (t1 && t2 && t3 && t4)	{		if (!m_bHovering)		{			SetForegroundColour( m_colHover );			m_bHovering = true;			invalidatePaint();			this->Refresh();		}	}	else if (m_bHovering)	{		SetForegroundColour( m_colNormal );		m_bHovering = false;		invalidatePaint();		this->Refresh();	}}

void ActorSceneCanvas::OnMouseCaptureChanged(wxMouseCaptureChangedEvent& e){    if (e.GetEventObject() == this && e.GetCapturedWindow() != this)    {        switch (mDragButton)        {        case wxMOUSE_BTN_MIDDLE:            {                wxASSERT(m_pCameraManip);                wxPoint pt = wxGetMousePosition();                pt = ScreenToClient(pt);                m_pCameraManip->onEnd(pt.x, pt.y, true);                m_pCameraManip = NULL;                break;            }        case wxMOUSE_BTN_LEFT:            {                //wxASSERT(GetActiveAction());                //wxPoint pt = wxGetMousePosition();                //pt = ScreenToClient(pt);                //GetActiveAction()->onEnd(pt.x, pt.y, true);                m_pUpdateListener->disable();            }            break;        }        mDragButton = wxMOUSE_BTN_NONE;    }}

void GraphicsWindowWX::grabFocusIfPointerInWindow(){    // focus this window, if the pointer is in the window    wxPoint pos = wxGetMousePosition();    if( wxFindWindowAtPoint( pos ) == _canvas )        _canvas->SetFocus();}

void ggscfg_ColorEditSheet::on_timer(wxTimerEvent& event) {  if (this->IsShown() == false) {    return;  }    static int pulse = 0;  pulse = pulse++ % 10;  static bool oldinv = 0;  wxPoint pt = wxGetMousePosition();  // 
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